Wire saw apparatus's protective device for cutting e.g. stone, has pipe element with piece including axial-direction piercing-hole, and securing unit and opposition securing unit closing piercing-hole of pipe-element

摘要

The device a pipe apparatus (11) provided with a pipe element (12) which has an accommodation space (13) extended along a longitudinal-direction axis line (A) for a saw wire. A piece of a pipe element has an axial-direction piercing-hole. A closing unit is set as a structure which has a securing unit and opposition securing unit for closing the piercing-hole of one of the pipe-element. The coupling unit is taken as the structure which has the piece of protrusion (20, 30) and piece of groove (21, 31).